Although there are sources (Be'er Heitev OC 224:8) which discuss placing stones on a grave, that seems to be more of an honor for the deceased. Apparently Rebbi Akiva Eiger asked his family to stone his grave as an atonement - where do we find such a concept? (And is his will available to view?)
שֶׁכָּל הַמִּתְנַדֶּה וּמֵת בְּנִדּוּיוֹ סוֹקְלִין אֶת אֲרוֹנוֹ
Anyone who dies in a state of excommunication, we stone his coffin
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Perfect, thank you! Would you happen to know where Rebbi Akiva Eiger uses this concept? – NJM Jul 14 '19 at 19:54
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